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United States Patent | 5,134,756 |
Sparrow ,   et al. | August 4, 1992 |
A method and apparatus for molding a plastic cap on a preformed metallic shank includes inserting the shank on a strip material by a shank insertion device such that a head of the shank is elevated above the strip material. A molding device, having an open mold cavity is engaged with the strip material such that the strip material acts as a portion of the mold. The elevated head is positioned within the cavity. Plastic is injected into the mold cavity to surround and encapsulate the button head.
Inventors: | Sparrow; Tim H. (Harrodsburg, KY); Harlow; Richard L. (Lexington, KY); Wilder; Don (Versailles, KY); Jackson; Kevin (Lexington, KY) |
Assignee: | YKK Corporation (Lyndhurst, NJ) |
Appl. No.: | 562685 |
Filed: | August 6, 1990 |
Current U.S. Class: | 24/94; 24/113MP; 411/923 |
Intern'l Class: | A44B 001/12 |
Field of Search: | 24/94,95,96,90 E,113 R,113 MP,90 A,90 HA,90 B 411/923,457,480,482,502,503 |
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